公开(公告)号：KR101405663B1

公开(公告)日：2014-06-19

申请号：KR1020120028054

申请日：2012-03-20

Applicant: 한국교통대학교산학협력단

Inventor： 손종태 ,  전효진 ,  강충수 ,  박종필 ,  정승진

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/1391 ,  H01M10/052

CPC classification number: Y02E60/122 ,  Y02T10/7011

Abstract: 본 발명은 리튬이차전지용 양극활물질 및 그 제조방법에 관한 것으로, 보다 상세하게는 공침법을 이용하여 입자크기 및 입도가 균일하고, 표면형태가 구형으로 제어된 금속산화물 전구체를 제조하고, 이를 이용하여 제조되어 구형의 형상을 가지며, 표면적이 넓은 화학식 1 또는 2로 표시되는 리튬이차전지용 양극활물질 및 그 제조방법에 관한 것이다.
본 발명에 의하면, 간단한 공정으로 고온에서 높은 구조적 안정성을 가지며, 균일한 구형의 형상을 가지는 양극활물질을 효율적으로 생산할 수 있다.
[화학식 1]
Li
1+α [M
β Fe
1-γ Mn
γ ]O
2
(상기 화학식 1에서, M은 Ni, Mg, Fe, Cu, Co, Al, Nb, Ti 및 V 중 선택된 어느 하나이고, 0.1≤α≤0.9, 0.1≤β≤0.9, 0≤γ≤0.9임)
[화학식 2]
1-xLi
2 MnO
3 - xLi[M
z Fe
1-y Mn
y ]O
2
(상기 화학식 2에서, M은 Ni, Mg, Fe, Cu, Co, Al, Nb, Ti 및 V 중 선택된 어느 하나이고, 0.1≤x≤0.9, 0.1≤y≤0.9, 0≤z≤0.9임)

公开(公告)号：KR101373538B1

公开(公告)日：2014-03-13

申请号：KR1020120124631

申请日：2012-11-06

Applicant: 한국교통대학교산학협력단

Inventor： 손종태 ,  강충수 ,  김청 ,  임정빈

IPC: H01M4/139 ,  D01D5/00 ,  D04H1/728 ,  H01M4/58

Abstract: The present invention relates to a manufacturing method of positive electrode active material which has a shape of nanofiber having a large superficial dimension by using an electric radiation method. The present invention comprises: a first step of manufacturing a core viscous solution by mixing a source material measured as stoichiometric ratio according to an empirical formula which is represented as: LiFe1-xMxPO4 (0

Abstract translation: 本发明涉及通过使用电辐射法具有大的表面尺寸的纳米纤维的形状的正极活性物质的制造方法。 本发明包括：第一步骤，通过混合根据经验公式测量的化学计量比的源材料来制造芯粘稠溶液，所述经验公式表示为：LiFe1-xMxPO4（0≤X≤1，M = Ni，Mn ，Co，V，Cr，Cu，Ti，Zr）和螯合剂与溶剂; 通过将根据以下经验公式测量的化学计量比的源材料混合制造壳粘稠溶液的第二步：其表示为：Li'N'O2（N = Mn，Fe，Co，Ni，Cu，Cr，V， Ti，Zn）和螯合剂与溶剂; 通过使用双喷嘴排出核心粘性溶液和外部粘稠溶液在核心粘稠溶液和壳粘性溶液中辐射电制造纳米纤维前体的第三步骤; 干燥纳米纤维前体的第四步骤; 以及使干燥的纳米纤维前体增塑的第五步骤。 本发明具有通过双喷嘴进行电辐射而提供具有增加的稳定性的正极活性物质的效果，由此制造核 - 壳结构的正极活性物质，其中磷酸铁锂铁芯的表面被稳定地覆盖 锂金属氧化物壳。 （标号）（AA）制造LiFe_1-XM_XPO_4芯粘性溶液; （BB）制造Li [N] O_2壳粘稠溶液; （CC）制造双喷嘴电辐射纳米纤维前体; （DD）干燥纳米纤维前体; （EE）增塑纳米纤维前体

公开(公告)号：KR1020130117023A

公开(公告)日：2013-10-25

申请号：KR1020120039638

申请日：2012-04-17

Applicant: 한국교통대학교산학협력단

Inventor： 손종태 ,  강충수 ,  김청

IPC: H01M4/139 ,  H01M4/58 ,  H01M4/583 ,  D01D5/00

CPC classification number: C01B25/45 ,  C01P2006/40 ,  H01M4/366 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/0525 ,  Y02E60/122

Abstract: PURPOSE: A manufacturing method of an anode active material is provided to manufacture a lithium-iron-metal phosphate-carbon composite nanofiber anode active material with a large surface area by controlling the lithium-iron-metal phosphate-carbon composite to the nanofiber form using electric radiation. CONSTITUTION: A manufacturing method of a lithium-iron-metal phosphate-carbon composite nanofiber anode active material using electric radiation comprises: a first step of making a viscid solution by mixing a raw material, which is quantified by stoichlometric ratio with the empirical formula: LiFe1-xMxPO4 (0

Abstract translation: 目的：提供一种阳极活性材料的制造方法，通过将锂铁 - 金属磷酸盐 - 碳复合材料控制为纳米纤维形式，制造具有大表面积的锂铁 - 金属 - 磷酸 - 碳复合纳米纤维阳极活性材料，其使用 电辐射。 构成：使用电辐射的锂 - 铁 - 金属磷酸盐 - 碳复合纳米纤维阳极活性材料的制造方法包括：通过将通过比色比例定量的原料与经验式混合制备粘稠溶液的第一步骤： LiFe1-xMxPO4（0 <= X <= 1，M = Ni，Mn，Co，V，Cr，Cu，Ti，Zr）和螯合剂与溶剂; 通过向粘性溶液辐射电力制造纳米纤维前体的第二步骤; 干燥纳米纤维前体的第三步骤; 以及使干燥的纳米纤维前体增塑的第四步骤。

公开(公告)号：KR1020130107478A

公开(公告)日：2013-10-02

申请号：KR1020120029301

申请日：2012-03-22

Applicant: 한국교통대학교산학협력단

Inventor： 손종태 ,  강충수 ,  김청

IPC: H01M4/1391 ,  H01M4/525 ,  H01M4/505 ,  D04H1/728

CPC classification number: C01G53/006 ,  C01G45/006 ,  C01G51/42 ,  C01P2006/40 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  Y02E60/12

Abstract: PURPOSE: A manufacturing method of a positive active material is provided to manufacture a Li[Ni1/3Co1/3Mn1/3]O2 positive active material with improved surface area and high voltage performance by using an electrospinning method. CONSTITUTION: A manufacturing method of a Li[Ni1/3Co1/3Mn1/3]O2 positive active material comprises a step of preparing a solution including a precursor of the Li[Ni1/3Co1/3Mn1/3]O2 positive active material; a step of electrospinning the solution and drying the solution to manufacture nanofiber; and a step of heat-treating the dried nanofiber. The heat-treatment step consists of a first heat treatment at 450-550 °C and a second heat treatment at 600-900 °C and is conducted under an oxygen atmosphere. [Reference numerals] (AA) Preparing raw material; (BB) Mixing and stirring; (CC) Electric radiating; (DD) Drying and pulverizing; (EE) Heat treating (Air/O_2 atmosphere)

Abstract translation: 目的：提供一种正极活性材料的制造方法，通过静电纺丝法制造具有改善的表面积和高电压性能的Li [Ni1 / 3Co1 / 3Mn1 / 3] O2正极活性材料。 构成：Li [Ni1 / 3Co1 / 3Mn1 / 3] O2正极活性物质的制造方法包括制备包含Li [Ni1 / 3Co1 / 3Mn1 / 3] O2正极活性物质的前体的溶液的工序。 将溶液静电纺丝并干燥溶液制造纳米纤维的步骤; 以及对干燥的纳米纤维进行热处理的步骤。 热处理步骤包括在450-550℃的第一次热处理和600-900℃的第二次热处理，并在氧气氛下进行。 （附图标记）（AA）制备原料; （BB）混合搅拌; （CC）电辐射; （DD）干燥粉碎; （EE）热处理（空气/ O_2气氛）